Quantum Brownian motion for periodic coupling to an Ohmic bath

Sabrina Maniscalco, Jyrki Piilo, Kalle-Antti Suominen

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Abstract

We show theoretically how the periodic coupling between an engineered reservoir and a quantum Brownian particle leads to the formation of a dynamical steady-state which is characterized by an effective temperature above the temperature of the environment. The average steady-state energy of the system has a higher value than expected from the environmental properties. The system experiences repeatedly a non-Markovian behavior—as a consequence the corresponding effective decay for long evolution times is always on average stronger than the Markovian one. We also highlight the consequences of the scheme for the Zeno-anti-Zeno crossover which depends, in addition to the periodicity t, also on the total evolution time of the system.
Original languageEnglish
Article number0321105
Number of pages6
JournalPhysical Review A
Volume75
Issue number3
DOIs
Publication statusPublished - 7 Mar 2007

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